硅酸镁铝吸附脱除氯化物的研究

石油炼制与化工 ›› 2019, Vol. 50 ›› Issue (4): 94-100.

硅酸镁铝吸附脱除氯化物的研究

李瑞丽,张革,张东媛

中国石油大学（北京）重质油国家重点实验室

收稿日期:2018-08-16 修回日期:2018-09-28 出版日期:2019-04-12 发布日期:2019-04-28
通讯作者: 张革 E-mail:1157574429@qq.com
基金资助:

STUDY ON REMOVAL OF CHLORIDE BY MAGNESIUM ALUMINUM SILICATE

Received:2018-08-16 Revised:2018-09-28 Online:2019-04-12 Published:2019-04-28
Supported by:

摘要/Abstract

摘要： 根据多孔硅酸盐材料吸附性能优良的特点，利用高温水热法合成硅酸镁、硅酸铝以及硅酸镁铝三种吸附剂，通过对模拟油中氯化物的脱除效果考察以及BET、XRD和SEM的表征，筛选出硅酸镁铝为最佳吸附剂。在不同水热处理温度下反应不同时间，制得不同镁铝比的吸附剂，并对模拟油中氯化物进行吸附实验，结果表明硅酸镁铝系列脱氯效果最好的吸附剂是在120 ℃下反应18 h制得，当镁铝物质的量比为3∶2、吸附时间为12 h、吸附温度为30℃、油剂质量比为20、模拟油初始浓度为60 mg/L时吸附效果最好，模拟油中的氯化物脱除率达到65.17%，说明体系中镁和铝的氧化物共同存在且达到一定比例时，吸附剂颗粒堆积更加均匀，比表面积和孔体积明显增加，吸附剂的吸附能力有效增加。

关键词: 模拟油, 脱氯, 吸附剂, 硅酸镁铝

Abstract: Porous silicate materials possess excellent adsorption characteristics. Three kinds of adsorbents of magnesium silicate，aluminum silicate and magnesium silicate were synthesized by high temperature hydrothermal method at different treating time and characterized by BET, XRD and SEM techniques, and the chloride removal efficiencies from simulated oil were tested. The magnesium aluminum silicate was selected as the best adsorbent. The experimental results showed that the best adsorbents is obtained by reacting at 120 ℃ for 18 h. When the ratio of magnesium to aluminum was 3∶2， the adsorption time 12 h，the ratio of adsorbent to oil 1∶20 and the adsorption temperature 30 ℃，and the initial concentration of model oil 60 mg/L，the adsorption dechlorination rate reached 65.17%. This indicates that when the magnesium and aluminum oxides in the system co-exist and reach a certain proportion, the adsorbent particles accumulate more uniformly, the specific surface area and the pore volume increase obviously, and the adsorption capacity of the adsorbent increases effectively.

Key words: model oil, dechlorination, adsorbent, magnesium aluminum silicate

中图分类号:

李瑞丽张革张东媛. 硅酸镁铝吸附脱除氯化物的研究[J]. 石油炼制与化工, 2019, 50(4): 94-100.

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